MHP20S Series
Power Resistor
MHP20S Series
•
•
•
•
•
TO-126 housing
Low inductance and capacitance for high frequency circuits
20W power rating
High stability film resistance elements
RoHS compliant
IRC’s MHP20S series resistors satisfy demanding applications for accurate
and stable power resistors housed in the convenient TO-126 case. The
resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal
resistance and ensuring high insulation resistance between terminals and tab. The non-inductive design makes
these products especially useful in high frequency and high speed pulse applications.
Electrical Data
Power Rating
1
Heatsink
20W
2
Free Air
1.0W
3
Voltage
Thermal
4
Rating Resistance
Resistance Range
Min
0.01Ω
0.1Ω
10Ω
Max
0.09Ω
9.1Ω
51KΩ
Nominal
Typ. TCR
Tolerances Resistance
(ppm/°C)
Series
5
E24
Includes
2.5 & 5.0
multiplier
Inductance Capacitance
500 V
5.9°C/W
±1%, ±5%
See Chart
<10nH
<2pF
TCR (ppm/°C) 0 to 100°C
Maximum current 25 amps
Power rating based on 25°C case temperature
3
Power rating based on 25°C ambient temperature
4
Maximum voltage 500V or
√
P x R
5
Contact factory for availability of resistance or tolerance
values outside this range
1
2
Typical TCR For Low Values
250
200
150
100
50
0.01
Resistance (Ohms)
0.1
1.0
Pulse Energy Durability
10K
1K
Frequency Characteristics
MHP20S 1K
Pulse Peak (Watts)
1K
Damage Level
Impedance (ohms)
100
MHP20S 100R
MHP20S 50R0
100
Safety Zone
10
10µ
10
MHP20S 10R0
MHP20S 5R0
100µ
1m
10m
100m
1
100K
1M
10M
100M
1G
10G
Pulse Width (seconds)
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
Frequency(Hz)
Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
MHP20S Series Issue May 2010
MHP20S Series
Power Resistor
Physical Data
G
A
D
B
F
C
Dim
A
B
C
D
E
In (nom)
0.335
0.472
0.122
0.122
0.669
0.126
0.150
0.069
0.020
0.024
0.055
0.200
mm
8.5 ±0.2
12.0 ±0.2
3.1 ±0.2
3.1 ±0.1
17.0 ±1.0
3.2 ±0.5
3.8 ±0.2
1.75 ±0.1
0.5 ±0.05
0.6 ±0.05
1.4 ±0.05
5.08 ±0.1
E
F
K
L
G
J
H
M
Case, Epoxy UL94-V0
Leads, Sn Plated Cu
Conductor, Cu
Resistor, Ni-Cr or RuO
Substrate, Alumina
Tab, Ni Plated Cu
H
J
K
L
Insulated Between Tab and Resistor
M
Lead & Tab Material
Part Weight
Tin Plated Copper
0.9g
Environmental Data
Test
Load Life
Humidity
Short Time Overload
Vibration
Insulation Resistance
Dielectric Withstanding Voltage
Resistance to Solder Heat
Solderability
Operating Temperature Range
Method
1,000 Hours @ 25°C;
90 minutes on, 30 minutes off
1000 hours; 40°C, 90-95% RH, 0.1W DC
2X Rated Power, not to exceed 1.5X Rated Voltage
for 5 seconds, 25° w/ Heat Sink
10 cycles; X, Y, Z axis, amplitude 0.75mm, 100-
2000Hz sweep/min
Between terminals and tab
Terminals to tab; 60sec, 1mA
350 ± 5°C for 3 seconds
230 ± 5°C, 3sec.
Specification - Performance
±(1.0% + 1mΩ)
±(1.0% + 1mΩ)
±(0.25% + 1mΩ)
±(0.25% + 1mΩ)
>1000MΩ
2000 volts AC
±(0.10% + 1mΩ)
>95% coverage
-55°C to +155°C
Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
MHP20S Series Issue May 2010
MHP20S Series
Power Resistor
Temperature Rise Data
120
100
∆T
film
(°C)
80
60
40
20
0
0
2
4
6
8
10
12
Power (Watts)
14
16
18
20
Resistor Film Temp Rise with Respect to Tab Temp
Power Derating Data
100
% of Rated Power
50
10
25°
Tab Temperature (°C)
155°
Tube Packaging Data
Tube Dimensions
Dim
A
B
G
F
Application Notes
Nom.
(mm)
3.25
8.0
16.25
34.4
6.4
R0.7
535.0
Tol.
(mm)
0.15
0.15
0.15
(34.0)
(6.0)
(R0.5)
1.0
1.
Insulating material is unnecessary between the heat sink
and the tab, as the resistor film is isolated by the internal
alumina substrate.
2. When mounting with a fastener, thermal grease is
recommended.
3. Thermal design should satisfy the following equation: Tab
Temperature (T
T
) + [Thermal Resistance (R
qJT
) x Power
applied (Watts)]
≤
155°C over the full operating temperature
of the application.
4. Resistor film temperature is not to exceed 155°C during
operation.
5. This product is RoHS compliant by exemption according to
RoHS directive 2002/95/EC exemptions 5 & 7, as they apply
to lead in glass and internal solder connections.
C
D
E
E
A
B
C
D
F
G
Ordering Data
Prefix
Style
TFP - MHP20SLF - 1R50 - J
- L04
MHP20SLF = 20W, TO-126 style power resistor
Resistance Code
4-digit resistance code.
Ex: 0R05 = 0.05Ω, 10R0 = 10Ω, 1K00 = 1KΩ
Absolute Tolerance Code
J = ±5%; F = ±1%
Packaging Code
L04 = RoHS compliant tube (50 pcs per tube)
For additional information or to discuss your specific requirements, please contact our
Applications Team using the contact details below.
Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
MHP20S Series Issue May 2010
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